The Nucleus

Question 1

Which items are directly related to radioactive decay?

Revolt · Accepted Answer

B: E = mc2; D: mass defect

Question 2

Which of these statements explains the difference between nuclear binding energy and the strong nuclear force? Check all that apply.

Revolt · Accepted Answer

B: Nuclear binding energy is the energy needed to separate nuclear particles.; C: The strong nuclear force holds an atom’s protons and neutrons together.; F: Nuclear binding energy can be calculated using E = mc2.

Question 3

Calculate the mass defect for oxygen-16 given this data. Round to the 5 decimal place.mass of an oxygen-16 atom: 15.994914 amumass of a proton: 1.00728 amu mass of a neutron: 1.00866 amumass defect = ⇒ 0.13261 amu

Revolt · Accepted Answer

PENDING

Question 4

Mass defect for oxygen-16 = 0.13261 amu How many kilograms does the mass defect represent?

Revolt · Accepted Answer

B: 2.20 × 10 -28 kg

Question 5

Kilograms represented by the mass defect for oxygen-16: 2.20 × 10 -28 kgWhat is the nuclear binding energy for oxygen-16?

Revolt · Accepted Answer

C: 1.98 × 10 -11 J

Question 6

How many protons does Thorium have? How many neutrons does Thorium-234 have? Calculate the mass defect for the isotope thorium-234 = amu

Revolt · Accepted Answer

90

Question 7

Mass defect for the isotope thorium-234 = 1.85864 amuHow many kilograms does the mass defect represent?

Revolt · Accepted Answer

C: 3.09 × 10-27 kg

Question 8

Kilograms represented by the mass defect for thorium-234 = 3.09 × 10-27 kgWhat is the nuclear binding energy for thorium-234?

Revolt · Accepted Answer

A: 2.78 × 10-10 J

Question 9

Calculate the mass defect and the nuclear binding energy of nitrogen-14.The mass of a proton is 1.00728 amu, and the mass of a neutron is 1.00866 amu. The mass of a nitrogen-14 atom is 14.00307 amu.The mass defect of nitrogen-14 is amu. Round to the 5 decimal place. The nuclear binding energy of one nitrogen-14 atom is x 10A J. Round to 3 significant digits. A:

Revolt · Accepted Answer

0.10851

Question 10

How many neutrons does Thorium-234 have?

Revolt · Accepted Answer

144

The Nucleus Answers

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